Walker



FIG. 1 is a perspective top front right view of a walker, showing my new design;

FIG. 2 is a perspective top rear left view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a right elevation view thereof;

FIG. 6 is a left elevation view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof;

FIG. 9 is a perspective top rear left view of the walker in a folded configuration; and,

FIG. 10 is a perspective top front right view of the walker in a folded configuration. 

CLAIM The ornamental design for a walker, as shown and described. 